Product, Segment and Geographic Information

The Company has one operating segment, which is the sale, design, manufacture, marketing and support of thin film, optical critical dimension and overlay dimension metrology systems. The Chief Executive Officer has been identified as the Chief Operating Decision Maker (“CODM”) because he has the final authority over resource allocation decisions and performance assessment. The CODM does not receive discrete financial information about individual components of the Company’s business. For the years ended December 31, 2011, January 1, 2011, and January 2, 2010, the Company recorded revenue from customers primarily in the United States, Asia and Europe. The following table summarizes total net revenues and long-lived assets (excluding intangible assets) attributed to significant countries (in thousands):



	Years Ended
	December 31, 2011		January 1, 2011		January 2, 2010
Total net revenues:
United States	$	50,447	$	65,099	$	22,755
South Korea	87,533		54,156		29,992
Japan	34,806		19,776		11,293
China	14,267		17,532		3,157
Taiwan	10,853		15,990		3,615
Europe	13,893		7,119		3,868
All other	18,262		8,393		2,027
Total net revenues*	$	230,061	$	188,065	$	76,707


*	Net revenues are attributed to countries based on the customer’s deployment and service locations of systems.



	At
	December 31, 2011		January 1, 2011
Long-lived tangible assets:
United States	$	33,127	$	33,377
Europe	1,268		915
South Korea	503		1,229
Japan	159		518
Taiwan	113		60
China	36		28
All other	315		294
Total long-lived assets	$	35,521	$	36,421

The Company’s product lines differ primarily based on the environment in which the systems will be used. Automated systems are used primarily in high-volume production environments. Materials characterization products are primarily used to measure the composition, band gap, structure, and other physical and electrical properties of semiconducting materials for high brightness LED and solar/photovoltaic structures in both development and high volume environments. Integrated systems are installed inside wafer processing equipment to provide near real-time measurements for improving process control and increasing throughput. Revenues by product type were as follows (in thousands):



	Years Ended
	December 31, 2011		January 1, 2011		January 2, 2010
Automated Systems	$	139,261	$	110,955	$	36,554
Integrated Systems	25,413		17,437		2,767
Materials Characterization	30,100		26,156		9,832
Total product revenues	$	194,774	$	154,548	$	49,153